<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <el-row>
        <el-col :span="8">
          <!-- 搜索框 -->
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <!-- 添加商品 -->
        <el-col :span="4" class="addBtn">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区域 -->
      <el-table :data="goodsList" border stripe>
      <!-- 索引 -->
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="110px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="80px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="170">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <!-- 操作按钮　-->
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
              :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize"
              layout="total, sizes, prev, pager, next, jumper" :total="total" background>
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
  export default {
    name: "List",
    data() {
      return {
        // 查询参数对象
        queryInfo: {
          query: '',
          // 显示第几页
          pagenum: 1,
          // 显示多少条数据
          pagesize: 10
        },
        // 商品列表
        goodsList: [],
        // 总数据条数
        total: 0,
      }
    },
    created() {
      this.getGoodsList()
    },
    methods: {
      // 根据分页获取对应的商品列表
      async getGoodsList() {
      const { data: res} = await this.$http.get('goods', { params: this.queryInfo})
        if (res.meta.status !== 200) {
          return this.$message.error('获取商品列表失败！')
        }
        this.$message.success('获取商品列表成功！')
        console.log(res.data);
        // 数据列表赋值
        this.goodsList = res.data.goods
        // 总数据条数赋值
        this.total = res.data.total
      },
      // 当前的显示数据多少
      handleSizeChange(newSize) {
        this.queryInfo.pagesize = newSize
        this.getGoodsList()
      },
      // 页码值发送变化
      handleCurrentChange(newPage) {
        this.queryInfo.pagenum = newPage
        this.getGoodsList()
      },
      // 根据商品Id删除数据
      async removeById(id) {
        const  confirmResult= await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => {
          return err
        })
        if (confirmResult !== 'confirm') {
          return this.$message.info('已取消删除商品！')
        }
        const { data: res } = await this.$http.delete(`goods/${id}`)
        if (res.meta.status !== 200) {
          return this.$message.error('删除商品失败！')
        }
        this.$message.success('删除商品成功！')
        this.getGoodsList()
      },
      // 添加商品
      goAddPage() {
        this.$router.push(`goods/add`)
      },
    }
  }
</script>

<style scoped>
  .addBtn {
    padding-left: 30px;
  }
  .el-table {
    margin-top: 15px;
  }
</style>